The fieldsets for PSA skills and Secondary skills are wrapped around table rows. This generates extremely invalid HTML, and the browser is under no obligation to render this in any particular way. Chrome is pushing the fieldset outside the table, which is then resulting in the repeating items being empty (and thus 0px high). As a demonstration, create a new character, hit Modify, and notice that all you can do is hit done. Then hit Add a few times followed by Modify. You'll see a delete icon, which you can press a number of times (equal to the number of times you hit Add) before it disappears and all you can hit is Done. The sheet is attributed to Chris W. ; I recommend contacting him and directing him to this thread, as this section of the sheet will likely require a major rewrite in order to function correctly.